// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) Meta Platforms, Inc. and affiliates. */

#include <linux/debugfs.h>
#include <linux/pci.h>
#include <linux/rtnetlink.h>
#include <linux/seq_file.h>

#include "fbnic.h"

static struct dentry *fbnic_dbg_root;

static int fbnic_dbg_pcie_stats_show(struct seq_file *s, void *v)
{
	struct fbnic_dev *fbd = s->private;

	rtnl_lock();
	fbnic_get_hw_stats(fbd);

	seq_printf(s, "ob_rd_tlp: %llu\n", fbd->hw_stats.pcie.ob_rd_tlp.value);
	seq_printf(s, "ob_rd_dword: %llu\n",
		   fbd->hw_stats.pcie.ob_rd_dword.value);
	seq_printf(s, "ob_wr_tlp: %llu\n", fbd->hw_stats.pcie.ob_wr_tlp.value);
	seq_printf(s, "ob_wr_dword: %llu\n",
		   fbd->hw_stats.pcie.ob_wr_dword.value);
	seq_printf(s, "ob_cpl_tlp: %llu\n",
		   fbd->hw_stats.pcie.ob_cpl_tlp.value);
	seq_printf(s, "ob_cpl_dword: %llu\n",
		   fbd->hw_stats.pcie.ob_cpl_dword.value);
	seq_printf(s, "ob_rd_no_tag: %llu\n",
		   fbd->hw_stats.pcie.ob_rd_no_tag.value);
	seq_printf(s, "ob_rd_no_cpl_cred: %llu\n",
		   fbd->hw_stats.pcie.ob_rd_no_cpl_cred.value);
	seq_printf(s, "ob_rd_no_np_cred: %llu\n",
		   fbd->hw_stats.pcie.ob_rd_no_np_cred.value);
	rtnl_unlock();

	return 0;
}

DEFINE_SHOW_ATTRIBUTE(fbnic_dbg_pcie_stats);

void fbnic_dbg_fbd_init(struct fbnic_dev *fbd)
{
	struct pci_dev *pdev = to_pci_dev(fbd->dev);
	const char *name = pci_name(pdev);

	fbd->dbg_fbd = debugfs_create_dir(name, fbnic_dbg_root);
	debugfs_create_file("pcie_stats", 0400, fbd->dbg_fbd, fbd,
			    &fbnic_dbg_pcie_stats_fops);
}

void fbnic_dbg_fbd_exit(struct fbnic_dev *fbd)
{
	debugfs_remove_recursive(fbd->dbg_fbd);
	fbd->dbg_fbd = NULL;
}

void fbnic_dbg_init(void)
{
	fbnic_dbg_root = debugfs_create_dir(fbnic_driver_name, NULL);
}

void fbnic_dbg_exit(void)
{
	debugfs_remove_recursive(fbnic_dbg_root);
	fbnic_dbg_root = NULL;
}